Vacuum Diagrams
Re: Vacuum Diagrams
KTF
Member
iTrader: (1)
Joined: Aug 2011
Posts: 297
Likes: 6
From: West Kentucky
Car: '87 Iroc
Engine: 350 TPI with Holley Terminator X
Transmission: 4L60e
Axle/Gears: Stock/ Factory
Re: Vacuum Diagrams
Hey if any body could help my I need a vacuum diagram for a '87 LS Camaro 2.8L Crossfire Multi-port fuelinjected v6. TBI and TPI diagrams do not work for my style motor. Thanks for any help.
Junior Member
Joined: Oct 2011
Posts: 3
Likes: 0
From: phoenix az
Car: 1991 Camaro RS
Engine: 305 5.0L
Transmission: 700r4
Re: Vacuum Diagrams
What will i need to replace my egr valve? I have a camaro rs tbi 305 5.0ltr. My car flutters when i dont give gas. Acts like it wants to turn off but doesn't. I had a diagnostic done a year ago and they said I had a Minor leak at the egr. So i assume thats the problem
Re: Vacuum Diagrams
Hi, I would make double-sure that it isn't something else first. Do a tune-up, check for vacuum leaks (those rubber lines aren't getting any younger), and try some injector cleaner in the tank. If the EGR does need replacing, they are pretty reasonable at the auto part stores. I like to check online first so I have the correct part No. and price before I walk in the store. Also, be very careful as to which line goes where as I noted in an earlier post (the solenoid valve is specially designed to be connected one way only).
Good luck!
Good luck!
Junior Member
Joined: Dec 2010
Posts: 27
Likes: 0
From: TX
Car: 84 Camaro
Engine: 305
Transmission: 700R4
Re: Vacuum Diagrams
Does anyone have an actual pic of the car for a 84 Berlinetta for the TVS swirtch? I need to replace or bypass mine. It broke off and i have no idea where to connect a new one. My water neck has a TVS switch on the right side of the neck and a coolant temp sensor on the left. I have the SB 305 W/4BBL
Re: Vacuum Diagrams
go with the 86-89 since they uused the Mass Air Flow the 90-92 switched to the speed density.
Guys I just bought a 91 Camaro Z28 Convertible, it had a 305 TBI. I did away with it and I installed a TPI system from a 1989 IROZ with a Mass Air Flow Sensor . I kept the original 1991 vent canister wich has a different diagam. My question is, should I set the vacuum lines up as the TPI 90-92 or should i find the vent canister for a 86-89 TPI?????
Thread Starter
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Re: Vacuum Diagrams
Junior Member
Joined: Mar 2013
Posts: 2
Likes: 0
From: green bay wi
Car: 84 trans am
Engine: 305
Transmission: 700r4
Re: Vacuum Diagrams
I'm assuming it's the 86 in your sig:

Also, for anyone who is looking for vacuum diagrams for your 3rd gen, just go to link below. It's got all the vacuum diagrams for the different engines over the years. Here it is: http://www.autozone.com/servlet/UiBr...3d80163807.jsp

Also, for anyone who is looking for vacuum diagrams for your 3rd gen, just go to link below. It's got all the vacuum diagrams for the different engines over the years. Here it is: http://www.autozone.com/servlet/UiBr...3d80163807.jsp
Junior Member
Joined: Oct 2009
Posts: 49
Likes: 0
From: Winston Salem, NC
Car: 1990 CAMARO RS
Engine: 350 - replaced 305 with 350
Transmission: 5 SPEED
Axle/Gears: STOCK [?]
Re: Vacuum Diagrams
need hoses diagram from air pump to diverter to manifolds to catalytic converter please
Joined: May 2009
Posts: 4,915
Likes: 40
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: Vacuum Diagrams
Sorry man. Those aren't vacuum lines. But I'll still hook you up. I need to know the year and model of your Camaro. What I will do is take a screen print of my parts and illustration of the emissions system. It should show everything you need. I'm currently at school right now. Bit I'll try to remember when I get home.
On Probation


Joined: Apr 2007
Posts: 1,592
Likes: 18
From: Syracuse NY
Car: 84 Z-28
Engine: 305 HO
Transmission: r-700
Axle/Gears: 3:73
Junior Member
Joined: Oct 2009
Posts: 49
Likes: 0
From: Winston Salem, NC
Car: 1990 CAMARO RS
Engine: 350 - replaced 305 with 350
Transmission: 5 SPEED
Axle/Gears: STOCK [?]
Re: Vacuum Diagrams
Sorry man. Those aren't vacuum lines. But I'll still hook you up. I need to know the year and model of your Camaro. What I will do is take a screen print of my parts and illustration of the emissions system. It should show everything you need. I'm currently at school right now. Bit I'll try to remember when I get home.
Thanks for your help!!
Keith
Junior Member
Joined: Jul 2009
Posts: 93
Likes: 0
From: Vienna / Austria / EU
Car: Pontiac Firebird ´87
Engine: L69 305
Junior Member
Joined: Jan 2016
Posts: 30
Likes: 0
From: San Antonio
Car: 1988 GTA
Engine: 5.7
Transmission: 700r4
Re: TPI Vacuum Diagrams
Here are 2 different vacuum diagrams for the TPI system. Just follow the link. https://www.thirdgen.org/forums/post...48-post12.html
If that is the case I have the 2 lines transposed. the top tip hose(control valve) hose going to the plenum the bottom tip hose going to the fuel return line. What would this cause? Thank you Chevy86
Senior Member
Joined: Apr 2016
Posts: 517
Likes: 4
From: Perth Western Australia
Car: 1987 Z28 Camaro
Engine: 305 LG4 4bbl
Transmission: TH700R4
Re: Vacuum Diagrams
pretty much all the diagrams can be located within this post
https://www.thirdgen.org/forums/tech...al-sticky.html
https://www.thirdgen.org/forums/tech...al-sticky.html
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